• Journal of Korean Society on Water Environment
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• v.22 no.5
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• pp.807-814
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• 2006

Sapkyo Lake Watershed occupies about 19.3% of total area of Chungnam Province, and it is necessary to make a plan of counter-measure for the maintenance of public waterbody sound as well as to ensure water resources due to urbanization and industrialization in this area so densely populated and excessively developed. Conventionally water quality management has been enforced by concentration-based system which is not considered the carrying capacity of receptors, hence there are no proper measures for the prevention of an excessive pollutant load over a waterbody. So even though emission sources abide by the conventional permission regulation, then the quantity of wastewater is increased continuously and encountered water shortage to use finally. Therefore this research focused on the review of introduction of total water quality management system in Sapkyo Lake watershed to maintain public waterbody sound and to ensure water resources. By doing this research in introduction of the system in advance, it can contribute to establish the methodology on systematic water quality management. Also the application of this system in Sapkyo Lake watershed can promote the sustainable development of the area by harmonizing the environment and regional economy ultimately.

• Korean Journal of Veterinary Research
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• v.35 no.1
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• pp.29-37
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• 1995

This study was carried out to investigate the morphological changes of the oxytocin secreting neurons in age-related rat hypothalamus by means of immunohistochemistry. The experimental group was 20 aged female rats (Sprague-Dawley, 25~30 months), and the control group was 10 adult female rats (10 months). All animals were perfused transcardially with 4% paraformaldehyde-lysine-periocdate(PLP), and serial transverse brain sections($30{\mu}m$) were prepared by means of cryotome, and were stained with rabbit anti-oxytocin antisera immunohistochemically, using the free floating method and avidin-viotin peroxidase complex. The results were as followings. 1. The immunostained oxytocin secreting neurons were located at the paraventricular nucleus and supraoptic nucleus of age-related rat hypothalamus chiefly. 2. The numbers of oxytocin secreting neurons decreased at the paraventricular nucleus and supraoptic nucleus of age-related rat hypothalamus(p<0.01) 3. The oxytocin secreting neurons of age-related rat hypothalamus immunostained less than those of the adult rat hypothalamus, and the paraventricular nucleus immunostained greater than supraoptic nucleus in age-related rat. 4. The numbers and expansion of dendrite and axonal varicosities decreased in the age-related rat hypothalamus greatly.

• Korean Journal of Veterinary Research
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• v.35 no.1
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• pp.45-54
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• 1995

Pancreatic endocrine cells containing glucagon, insulin, somatostatin and pancreatic polypeptide were identified in the pancreas of the Korean native goat by using immunohistochemical method. Glucagon immunoreative cells were oval or fusiform in shape and located at the periphery of the pancreatic islets. Insulin immunoreactive cells were round or oval in shape and occupied throughout the pancreatic islets except the small area of the periphery. Somatostatin immunoreative cells were oval and elliptical, and mainly located at the periphery of the pancreatic islets. Some of these cells had a cytoplasmic process. Pancreatic polypeptide immunoreactive cells were elliptical or polyhedral and located at the periphery of the pancratic islets where two or more cells formed a cell cluster. The distribution rates of glucagon, insulin, somatostatin and pancreatic polypeptide immunoreactive cells were 24.4%, 44.3%, 13.2% and 18.1% respectively.

• 한국약용작물학회:학술대회논문집
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• 2010.10a
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• pp.315-315
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• 2010

• 한국약용작물학회:학술대회논문집
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• 2010.10a
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• pp.311-311
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• 2010

• Imaging Science in Dentistry
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• v.38 no.3
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• pp.177-182
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• 2008

A 27-year-old female was referred to our hospital postpartum due to rapid aggravation of facial swelling. She was diagnosed with osteomyelitis on clinical, radiological, and histopathological examinations, but the possibility of malignancy was not excluded. Clinical signs and symptoms such as facial swelling and discomfort were improved with four months of antibiotics treatment. This is as case of an osteomyelitis progressed from infected extraction socket in a woman with physiological changes of pregnancy. Decreased immunological response, increased sex hormone and calcium regulatory hormones regulate the response of the bone infection. We report this case for helping the diagnosis of unusual from of osteomyelities in pregnancy and postpartum.

• Imaging Science in Dentistry
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• v.50 no.3
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• pp.255-260
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• 2020

Acquired facial lipoatrophy is a rare disease with an unclear etiology and pathological pathway. The distinct causative factors of this disease have been not elucidated, but it is suspected to be associated with immune system-related diseases, most notably AIDS. Although the management of facial lipoatrophy is very important for patients' social life and mental health, no treatment framework has been developed due to the unknown nature of the disease manifestation. The present case report was designed to provide sequential imaging to visualize the disease progression. The clinical backgrounds of the patients are also introduced, helping characterize this disease entity more clearly for maxillofacial specialists.

• Tuberculosis and Respiratory Diseases
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• v.39 no.4
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• pp.348-354
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• 1992

Sj$\ddot{o}$gren's syndrome (SS) is an immunologic disorder characterized by progressive destruction of the exocrine glands due to infiltration of lymphocyte resulting in mucosal and conjunctival dryness accompanied by a variety of autoimmune phenomena. And SS is divided into primary and secondary by accompanying collagen vascular diseases. In Korea, only a few cases of primary SS and primary SS with interstitial pneumonitis have been documented. Recently we experinced a suspected case of primary SS with interstitial pneumonitis diagnosed by sublabial and open lung biopsy, Schirmer's test and slit lamp test.

• Proceedings of the Computational Structural Engineering Institute Conference
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• 2007.04a
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• pp.725-730
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• 2007

A framework of multi layered database is proposed for the integrated operation of civil infrastructure information in this study. The multi-layered database is a logically integrated database composed of standardized information layers. The framework of multi-layered database is defined by three axes, national assets, lifetime, and data levels. The axis of national assets indicates civil infrastructures such as bridges, dams, tunnels and power plants that can be considered as national key structures. The axes of lifetime and data levels indicate the standardized information layers generated from the life-phase of civil infrastructure and the priority of data in the information layers, respectively. The standardized information layers are basically composed of reusable data sets defined by information models. A prototype of standard database for steel bridges is constructed based on the framework as a proof of concept. Demonstration examples such as data consistency check and automatic generation of a FEA model show that the proposed concept can assure the sustainable interoperability of civil infrastructure information as well as design information of steel bridges.

• Proceedings of the Computational Structural Engineering Institute Conference
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• 2007.04a
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• pp.49-54
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• 2007

Structural integrity assessment technique for pavement system is studied considering the uncertainties among the material properties. The artificial neural networks technique is applied for the inverse analysis to estimate the elastic modulus based on the measured deflections from the FWD test. A computer code based on the spectral element method was developed for the accurate and fast analysis of the multi-layered soil structures, and the developed program was used for generating the training and testing patterns for the neural network. Neural networks was applied to estimate the elastic modulus of pavement system using the maximum deflections with and without the uncertainties in the material properties. It was found that the estimation results by the conventiona1 neural networks were very poor when there exist the uncertainties and the estimation results could be significantly improved by adopting the proposed method for generating training patterns considering the uncertainties among material properties.